Recently, various studies are being conducted to promote urban revitalization through the establishment of regional identity. Although limited studies have been conducted to investigate the causality between the local location and urban landscape factors, existing studies on the subject of urban landscape have shown limitations in applying it to regional activation as studies have been conducted only on the elements of a physical perspective. From this point of view, research and interest in non-physical perspective are increasing intermittently in recent years, but research on non-physical landscapes in the field of urban landscape is insufficient. The purpose of this study is to investigate the relationship between urban landscape factors and regional activation targeting Incheon Baedari. To this end, the landscape characteristics of Baedari's modern architecture and specialized street were selected as physical landscape factors
{"title":"A Study on the Relationship between Urban Landscape Factors and Community Revitalization -Focusing on the landscape elements of the Incheon Baedari area-","authors":"In-Hwan Wi, Sung-Kyu Kim","doi":"10.5762/kais.2024.25.1.594","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.594","url":null,"abstract":"Recently, various studies are being conducted to promote urban revitalization through the establishment of regional identity. Although limited studies have been conducted to investigate the causality between the local location and urban landscape factors, existing studies on the subject of urban landscape have shown limitations in applying it to regional activation as studies have been conducted only on the elements of a physical perspective. From this point of view, research and interest in non-physical perspective are increasing intermittently in recent years, but research on non-physical landscapes in the field of urban landscape is insufficient. The purpose of this study is to investigate the relationship between urban landscape factors and regional activation targeting Incheon Baedari. To this end, the landscape characteristics of Baedari's modern architecture and specialized street were selected as physical landscape factors","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"62 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140476624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study is a follow-up to existing research on the core competency of semiconductor design companies. This study analyzes changes in the importance of awareness of these companies' core competency factors and whether they have improved. Core competency was divided into product development, technological capabilities, market capabilities, human resources, and business management. The sample was 78 semiconductor design companies that are members of the Korea Semiconductor Industry Association, and they responded on a 5-point scale regarding the perceived importance of competitive factors and the degree of improvement. Competitiveness was highest in the human resources sector, followed by technological competitiveness and product development competitiveness. market development, competitor analysis, and external linkage capabilities have emerged as issues that must be supplemented. In addition, the expansion of emiconductor-related SW personnel, product planning
{"title":"Follow-Up Study on Improving Core Competency of Semiconductor Design Companies of Korea","authors":"Myoung-Ha Park, Jae-Ha Lee","doi":"10.5762/kais.2024.25.1.38","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.38","url":null,"abstract":"This study is a follow-up to existing research on the core competency of semiconductor design companies. This study analyzes changes in the importance of awareness of these companies' core competency factors and whether they have improved. Core competency was divided into product development, technological capabilities, market capabilities, human resources, and business management. The sample was 78 semiconductor design companies that are members of the Korea Semiconductor Industry Association, and they responded on a 5-point scale regarding the perceived importance of competitive factors and the degree of improvement. Competitiveness was highest in the human resources sector, followed by technological competitiveness and product development competitiveness. market development, competitor analysis, and external linkage capabilities have emerged as issues that must be supplemented. In addition, the expansion of emiconductor-related SW personnel, product planning","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"511 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140480028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aimed to examine the effect of couple characteristics and the father's childcare activities on school readiness through the mediation of the mother's warm parenting behavior. The data used for this study were drawn from the 7th year of the Panel Study on Korean Children (PKSC) of the Korea Institute of Childcare and Education. The data for 1,153 children aged between 72 and 29 months and going to kindergarten or nursery were analyzed. To examine the relationship and influence of each variable, a structural model was verified, and the model fit was excellent. According to the results of the analysis, it was found that the couple characteristics directly affected the school readiness of the children. Second, the father's childcare activities directly affected the children's school readiness. Third, the mother's warm parenting behavior directly affected children's school readiness. Fourth, the couple's characteristics and the father's childcare activities indirectly affected the children's school readiness through the mediation of the mother's warm parenting behavior. The result of verifying the significance of the indirect effect through bootstrapping showed it to be significant.
本研究旨在通过母亲的温暖养育行为的中介作用，研究夫妇特征和父亲的育儿活动对入学准备的影响。本研究使用的数据来自韩国儿童保育和教育研究所（Korea Institute of Childcare and Education）第 7 年的韩国儿童小组研究（Panel Study on Korean Children, PKSC）。研究分析了 1,153 名年龄在 72 到 29 个月之间、正在上幼儿园或托儿所的儿童的数据。为了研究各变量之间的关系和影响，对结构模型进行了验证，模型的拟合度非常好。分析结果表明，夫妇特征直接影响儿童的入学准备。其次，父亲的育儿活动直接影响孩子的入学准备。第三，母亲的温暖养育行为直接影响子女的入学准备。第四，夫妻特征和父亲的育儿活动通过母亲的温暖养育行为的中介作用间接影响了儿童的入学准备。通过引导法验证间接效应的显著性的结果表明，间接效应是显著的。
{"title":"The Effect of Couple Characteristics and Father’s Child Care Activities on Children\"s School readiness: The Mediating Effect of Mother’s Warm Parenting Behavior","authors":"Seok-Weon Seo","doi":"10.5762/kais.2024.25.1.102","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.102","url":null,"abstract":"This study aimed to examine the effect of couple characteristics and the father's childcare activities on school readiness through the mediation of the mother's warm parenting behavior. The data used for this study were drawn from the 7th year of the Panel Study on Korean Children (PKSC) of the Korea Institute of Childcare and Education. The data for 1,153 children aged between 72 and 29 months and going to kindergarten or nursery were analyzed. To examine the relationship and influence of each variable, a structural model was verified, and the model fit was excellent. According to the results of the analysis, it was found that the couple characteristics directly affected the school readiness of the children. Second, the father's childcare activities directly affected the children's school readiness. Third, the mother's warm parenting behavior directly affected children's school readiness. Fourth, the couple's characteristics and the father's childcare activities indirectly affected the children's school readiness through the mediation of the mother's warm parenting behavior. The result of verifying the significance of the indirect effect through bootstrapping showed it to be significant.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"229 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140476023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study investigates factors influencing consumer intention to use care farming to revitalize care farming. Data from 1,058 participants were collected through an online survey using a 5-point Likert scale. Variables include intention to use, demographic factors, obstacles(lack of time, cost, negative perception), and supply conditions(effectiveness, accessibility, safety, professionalism, simplicity, quick response, sustainability). An ordered probit model was used for analysis. Findings reveal age, occupation, lack of time, negative perception, effectiveness, professionalism, and sustainability significantly affect the intention to use care farming. This study suggests providing tailored programs for the elderly and office workers, offering short-term programs that allow people to participate in care farming even when they have limited time, strengthening public relations to rectify negative perceptions on care farming. In addition, it is necessary to develop the care farming programs which effectiveness has been scientifically verified and which reflects consumer needs and preferences, led by a multidisciplinary team of experts in agriculture, medicine, and social welfare.
{"title":"A Study on Factors Influencing Consumer’s Intention to Use Care Farming","authors":"Hong-Kyou You, Jong-San Choi","doi":"10.5762/kais.2024.25.1.725","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.725","url":null,"abstract":"This study investigates factors influencing consumer intention to use care farming to revitalize care farming. Data from 1,058 participants were collected through an online survey using a 5-point Likert scale. Variables include intention to use, demographic factors, obstacles(lack of time, cost, negative perception), and supply conditions(effectiveness, accessibility, safety, professionalism, simplicity, quick response, sustainability). An ordered probit model was used for analysis. Findings reveal age, occupation, lack of time, negative perception, effectiveness, professionalism, and sustainability significantly affect the intention to use care farming. This study suggests providing tailored programs for the elderly and office workers, offering short-term programs that allow people to participate in care farming even when they have limited time, strengthening public relations to rectify negative perceptions on care farming. In addition, it is necessary to develop the care farming programs which effectiveness has been scientifically verified and which reflects consumer needs and preferences, led by a multidisciplinary team of experts in agriculture, medicine, and social welfare.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"51 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Serviced residences for older people provide living support that allow seniors to live safely. This study examines the status of serviced residences for the elderly in Japan and makes suggestions for housing the elderly in Korea. This study was performed by reviewing the literature and materials published by the Japanese Ministry of Health, Labor and Welfare, Ministry of Land, Infrastructure, Transport and Tourism. In Japan, the Act of 'Securement of a Stable Supply of Housing for Elderly Individuals' and the Act regarding 'The Offering of Rental Housing to Persons Requiring Special Assistance to Secure Housing' were enacted to implement policies intended to secure stable housing an d daily living support for elderly and individuals with disabilities. Standards for serviced residences for the elderly are being established, and related information is available on the Internet. The implications of the results of this study are as follows. First, legal standards and requirements for the installation and operation of serviced residences for Korean elderly should be established. Second, jobs and employment opportunities tailored for the elderly should be created. Third, cooperation and links with various parties and local resident associations must be established to facilitate these activities.
{"title":"Cases and Implications of Residences for Elderly People with Service in Japan","authors":"Jin-Ah Lee","doi":"10.5762/kais.2024.25.1.263","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.263","url":null,"abstract":"Serviced residences for older people provide living support that allow seniors to live safely. This study examines the status of serviced residences for the elderly in Japan and makes suggestions for housing the elderly in Korea. This study was performed by reviewing the literature and materials published by the Japanese Ministry of Health, Labor and Welfare, Ministry of Land, Infrastructure, Transport and Tourism. In Japan, the Act of 'Securement of a Stable Supply of Housing for Elderly Individuals' and the Act regarding 'The Offering of Rental Housing to Persons Requiring Special Assistance to Secure Housing' were enacted to implement policies intended to secure stable housing an d daily living support for elderly and individuals with disabilities. Standards for serviced residences for the elderly are being established, and related information is available on the Internet. The implications of the results of this study are as follows. First, legal standards and requirements for the installation and operation of serviced residences for Korean elderly should be established. Second, jobs and employment opportunities tailored for the elderly should be created. Third, cooperation and links with various parties and local resident associations must be established to facilitate these activities.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"256 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140472898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, the Halloumi cheese containing "Baromi 2" rice flour was manufactured to increase production yield. Halloumi cheese was produced by adding 1% or 2% rice flour to raw milk before pasteurization. Production yields, pH values, compositions, textures, and sensory preferences of Halloumi cheese with added rice flour and control Halloumi cheese were compared. Product yield and cheese moisture content increased as the amount of rice flour added increased. Halloumi cheese containing 2% rice flour had the highest moisture content and lowest hardness. Sensory preference was lowest for cheese containing 2% rice flour, but no significant difference was found between cheese containing 1% rice flour and control cheese. These results show that adding rice flour increases cheese yield but that further research is needed to improve sensory preference.
{"title":"Characteristics of Halloumi cheese added with “Baromi 2” rice flour","authors":"Ja-Yeon Yoo, Jun-Sang Ham","doi":"10.5762/kais.2024.25.1.670","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.670","url":null,"abstract":"In this study, the Halloumi cheese containing \"Baromi 2\" rice flour was manufactured to increase production yield. Halloumi cheese was produced by adding 1% or 2% rice flour to raw milk before pasteurization. Production yields, pH values, compositions, textures, and sensory preferences of Halloumi cheese with added rice flour and control Halloumi cheese were compared. Product yield and cheese moisture content increased as the amount of rice flour added increased. Halloumi cheese containing 2% rice flour had the highest moisture content and lowest hardness. Sensory preference was lowest for cheese containing 2% rice flour, but no significant difference was found between cheese containing 1% rice flour and control cheese. These results show that adding rice flour increases cheese yield but that further research is needed to improve sensory preference.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"169 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of dance performance trends using news big data focusing on 2000~2022","authors":"SI Yu","doi":"10.5762/kais.2024.25.1.408","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.408","url":null,"abstract":"","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"52 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140470704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mortar ammunition has strong destructive power, making it dangerous and challenging to use for training purposes. Therefore, to achieve realistic training effects within limited resources, training ammunition called "Sub-caliber" has been implemented by removing the explosives and incorporating smoke agents. This ammunition is maintained under vacuum-sealed conditions using protective waterproof barrier bags to prevent moisture and corrosion. On the other hand, an issue arose where barrier bags of several 22mm sub-caliber cartridges for the 4.2-inch mortar stored by the military experienced inflation. Compositional analysis detected hydrogen gas, and the cause of inflation was attributed to a chemical reaction between the magnesium in the smoke agents and moisture. After identifying the factors that can generate moisture, which can induce a chemical reaction with the magnesium in the smoke agents, the internal packaging material was found to be the primary source of moisture. This issue was addressed by controlling the chemical reaction rate through temperature regulation by changing the storage location. Finally, the Arrhenius equation was used to predict and compare the shelf life of an igloo magazine and an above-ground magazine. The Arrhenius equation describes the relationship between the rate of a chemical reaction and temperature. It can be used to predict the stability at different storage temperatures. As a result, the estimated shelf life of an igloo magazine is approximately 21 years (7721 days), representing a 1.5-fold improvement compared to the above-ground magazine. The quality improvement measures presented in the paper are expected to enhance the stability and storage performance of the abovementioned ammunition and all ammunition containing magnesium components.
{"title":"Cause analysis of inflation of 22mm sub-caliber catridge packing and improvement of shelf life","authors":"Jin-Wook Baek","doi":"10.5762/kais.2024.25.1.403","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.403","url":null,"abstract":"Mortar ammunition has strong destructive power, making it dangerous and challenging to use for training purposes. Therefore, to achieve realistic training effects within limited resources, training ammunition called \"Sub-caliber\" has been implemented by removing the explosives and incorporating smoke agents. This ammunition is maintained under vacuum-sealed conditions using protective waterproof barrier bags to prevent moisture and corrosion. On the other hand, an issue arose where barrier bags of several 22mm sub-caliber cartridges for the 4.2-inch mortar stored by the military experienced inflation. Compositional analysis detected hydrogen gas, and the cause of inflation was attributed to a chemical reaction between the magnesium in the smoke agents and moisture. After identifying the factors that can generate moisture, which can induce a chemical reaction with the magnesium in the smoke agents, the internal packaging material was found to be the primary source of moisture. This issue was addressed by controlling the chemical reaction rate through temperature regulation by changing the storage location. Finally, the Arrhenius equation was used to predict and compare the shelf life of an igloo magazine and an above-ground magazine. The Arrhenius equation describes the relationship between the rate of a chemical reaction and temperature. It can be used to predict the stability at different storage temperatures. As a result, the estimated shelf life of an igloo magazine is approximately 21 years (7721 days), representing a 1.5-fold improvement compared to the above-ground magazine. The quality improvement measures presented in the paper are expected to enhance the stability and storage performance of the abovementioned ammunition and all ammunition containing magnesium components.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140477458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polycarbonate materials used for livestock barn roofing undergo degradation not only due to the factors such as temperature, humidity, and UV exposure in outdoor environments but also from gases generated in livestock settings, such as ammonia and hydrogen sulfide. Therefore, we studied the development of materials to improve weather resistance, impact resistance, and chemical resistance with various tests including DSC, FT-IR, thermal deformation, flexural strength, and impact strength, confirming the optimal content of 7 wt% (utilizing ECOZEN). In the weather resistance test, the PC-2 material exhibited a △YI 2 level, and it was observed that UV absorbers of the Benzophenone and Triazine series showed inadequate weather resistance compared to the Benzotriazole series. we expect that future development efforts will focus on creating polycarbonate-based materials with enhanced weather resistance and chemical resistance for the applications in livestock barns
{"title":"A Study on the Development of Polycarbonate corrugated sheet materials with 3-layer co-extrusion process technology for livestock barn roof","authors":"ChangHwan Kim, YoungHui Ko, Namchul Cho","doi":"10.5762/kais.2024.25.1.12","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.12","url":null,"abstract":"Polycarbonate materials used for livestock barn roofing undergo degradation not only due to the factors such as temperature, humidity, and UV exposure in outdoor environments but also from gases generated in livestock settings, such as ammonia and hydrogen sulfide. Therefore, we studied the development of materials to improve weather resistance, impact resistance, and chemical resistance with various tests including DSC, FT-IR, thermal deformation, flexural strength, and impact strength, confirming the optimal content of 7 wt% (utilizing ECOZEN). In the weather resistance test, the PC-2 material exhibited a △YI 2 level, and it was observed that UV absorbers of the Benzophenone and Triazine series showed inadequate weather resistance compared to the Benzotriazole series. we expect that future development efforts will focus on creating polycarbonate-based materials with enhanced weather resistance and chemical resistance for the applications in livestock barns","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"105 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140471604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Since the introduction of 3D printing technology, various equipment and materials have been developed and have expanded the scope of applications. Research related to the properties of newly developed materials is needed. Therefore, in this study, we compared the flexural strength of various temporary crown resins produced using 3D printing. Specimens were designed according to ISO 10477 standards (25 mm x 2 mm x 2 mm) for flexural strength measurement. Five types of resins from different manufacturers were selected, and specimens were printed using a digital light processing (DLP) printer (n=10, N=40). A three-point flexural strength test was conducted using a universal testing machine. To compare the groups, a one-way analysis of variance (ANOVA) was conducted, and Scheffe's post hoc test was used. Significant differences were observed among the groups (P < 0.05). However, since all groups exhibited values higher than the flexural strength threshold specified by ISO-10477, it is suggested that the resin materials would be acceptable for temporary restorations produced with 3D printing technology in all groups.
自 3D 打印技术问世以来，各种设备和材料应运而生，扩大了应用范围。我们需要对新开发材料的特性进行相关研究。因此，在本研究中，我们比较了使用 3D 打印技术生产的各种临时牙冠树脂的抗弯强度。试样按照 ISO 10477 标准设计（25 毫米 x 2 毫米 x 2 毫米），用于测量抗弯强度。从不同的制造商处选择了五种树脂，并使用数字光处理（DLP）打印机打印了试样（n=10，N=40）。使用万能试验机进行了三点弯曲强度测试。为了比较各组之间的差异，进行了单因素方差分析（ANOVA），并使用了 Scheffe 事后检验。观察到各组之间存在显著差异（P < 0.05）。不过，由于所有组的抗弯强度值都高于 ISO-10477 规定的阈值，因此建议所有组的树脂材料都可以用于用 3D 打印技术制作的临时修复体。
{"title":"Comparison evaluation of Flexural Strength of Photopolymerized Composite Resin for 3D Printed Provisional Restorations","authors":"Ha-Bin Lee, Ju-Hee Lee","doi":"10.5762/kais.2024.25.1.541","DOIUrl":"https://doi.org/10.5762/kais.2024.25.1.541","url":null,"abstract":"Since the introduction of 3D printing technology, various equipment and materials have been developed and have expanded the scope of applications. Research related to the properties of newly developed materials is needed. Therefore, in this study, we compared the flexural strength of various temporary crown resins produced using 3D printing. Specimens were designed according to ISO 10477 standards (25 mm x 2 mm x 2 mm) for flexural strength measurement. Five types of resins from different manufacturers were selected, and specimens were printed using a digital light processing (DLP) printer (n=10, N=40). A three-point flexural strength test was conducted using a universal testing machine. To compare the groups, a one-way analysis of variance (ANOVA) was conducted, and Scheffe's post hoc test was used. Significant differences were observed among the groups (P < 0.05). However, since all groups exhibited values higher than the flexural strength threshold specified by ISO-10477, it is suggested that the resin materials would be acceptable for temporary restorations produced with 3D printing technology in all groups.","PeriodicalId":112431,"journal":{"name":"Journal of the Korea Academia-Industrial cooperation Society","volume":"9 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140474861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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